Heel-nailing machine



Oct. 9, 1928;

E. R. POPE HEEL NAILING MACHINE Aug. 28, 1926 Patented Get. 9, 19.281,

UNITED STATESPATENT OFFICE.

i ELlVIER It. POPE, OF HAMILTON, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MA- CI-IINSRY CORPORATION,

JERSEY.

OF PATERSON, NEVI lJERSEY, A CORPORATION OF NEIN' HEEL-NAIIJING MACHINE.

Application filed August 28, 1925. Serial No. 132,209. i

This invention relates to heel nailing machlnes andV more particularly to improved means for holding heels accurately in proper position to be nailed.

5 When a shoe heel is designed the points at which the heel attaching nails are to vbe driven are taken into Consideration, the pattern formed by these points beingcalled the nailing pattern of the heel. A number ot factors atleet the determination of this nailing pattern, among them being the size and shape of the heel, and the location of the heel-seatV nails, last-ing tacks, and insole edge in the shoe to which the heel is to be attached. For best results in heel attaching it is desirable that the nailing pattern of the heel to be located accurately in relation to the nail driving mechanism, and Withsom'evtypes of heels, suchv as rubber heels having nail anchoring ,washers through which the nails must be driven, ac curate location is a necessity.

I-Ieretofore When great accuracy in thelocation of a heel relatively toA nail driving mechanism has been required it has been customary to provide a rigid holder, or form, consisting` o'lf a metal plate o'l approximately the same thickness as the heel and having through it an opening of exactlythe same size and shape as the heel. This rigid holder, oi' course, would iitfheels of only one size and shape and when it was necessary to nail heels of another size or shape said holder had to be removed from the nailing machine and another holder of the right size and shape sub-V stituted for it. Y A

An object of the present invention is to improve heel nailing machines bythe provision of a heel holder of superior construction, which Will greatly reduce the frequency With Which it is necessary to change holders or, under some conditions, eliminate changingat all, and Will, at the same time, locate heels in the machine With a high degree of accuracy.

In the accomplishment of this object thev invention provides a heel holder in which the breast edges of heels of different sizes or shapes are located against iXed, spaced abutments by movable side and rear gages,

ly connected together in such a. Way that the holder is expanded or contracted ina pluwhich in the holder herein illustrated are operative! `its fixed abutments,1is located inta delinite relation to the nail guidingy conduits in the nailing die and all heels Within the range of the holder are delinitely and accurately located in predetermined relation to said die.

The particular holder herein shown is especially useful in operating upon heels of one common type, namely rubber heels in which a range of dierent sizes or shapes all have the same nailing pattern, located at substantially the same distance from `the breast edges of the heels, the heels of the diliferent sizes included in the range dilfering from each other attheir side and rear edges. In this instance, for example, the different heels Will all be accurately locatedand held in correct relation to the nailing die, both in respect to the nailing pattern of the heels and their outines, Without any attention being paid'even to adjustments When changing from one size or shape ofvheel to another. i Y I/Vhile one specilic embodiment if the inven-l tion is herein shown and described in detail, it should be understood that various modiications may be mad-e, -Within the scope lot the appendedclaims, to adapt the invention to the practical conditions under Which it may be' used.

In the accompanying drawingsz Fig. 1 is a plan view of a heelholder embodying the invention;

Fig. 2 is a sectional view upon the line yII-.-II of Fig. 1, showing the holder in operduits 14 which are arranged in a fixed nailingv pattern. This construction is Well known in 'heeling machines and reference may be had to United States Letters Patent No. 1,365,802, granted .I an. 18, 1921, on application ot'. J. F. Standish, for a more complete disclosure of such a ymachine.r The heel holder herein ,illustratedy is so designed that it may be readily substituted or the heel holding form or ring in the formholder disclosed in the said patent.l y f A plate 16 having a central opening 18 is provided at its sides with ledges 20 adapted toy y be inserted in suitable guides in the form holder Yof a heeling machine, whereby the plate 16 is accurately positioned and held in definite relation to the nailing die.

At the breast side of the opening 18 there are provided two fixed, spaced abutinents 22 arranged to be engaged by the breast edge of a heel near its'side edges, the locations of said abutments being such that heels will be uniformly positioned irrespective of slight differences in the curvature of their breast edges.

A rear gage 24 is arranged to slide forwardly and rearwardly, toward and from the breast gage constituted by the abutments 22, in under-cut guides 26 formed in the plate 16. Compression springs 28, housed in recesses 30 in the plate, bear against pins '32 which are screwed into the rear gage 24, as shown in 3, and tend to move the rear gage forwardly toward the breast Side gages Sel are pivotally movable about fixed centers 36 inwardly and outwardly of the holder, and areconnectedby slots and pins l0 with forward extensions 42 of the rear gage 2li. The result of the pivotal mounting of the side gages and 'their pin-andslot connections to the rear gage is that the side gages are moved by the rear gage as the latter moves toward or from the breast gage, providing an eXpansible holder which non mally contracted by the yielding springs 28.

The design and proportions of the parts are such that the inward and outward movements of the side gages 34- are less than the forward and rearward movements of the rear gage 211, since heels of different sizes differ more in length than in width. lit

will, therefore, be apparent that, by reason of the structure and connections above described, outward movement of any one of themovablc gages will cause the holder to be expanded unequally in a plurality of directions. lllhe dotted lines 11:4, e6 indicate two heels of different sizes but having the same nailing pattern located in the same relation to the heel breast. From the foregoing it will be apparent that such heels of delierent sizes will be positively and definitely located in proper relation to the nailing die with great accuracy and that the frequency with which it is necessary to change heel holders in the ordinary course of work will be greatly reduced, since two orV more sizes or shapes of heels are frecpuentn ly .made with the same nailing.

Having described my invention, what l claim as new and desire to be secured by Letters Patent f the United States is:

1. A heel holder comprising fixed, spaced abutments arranged to be engaged by a curved heel breast at separated points, a rear gage movable toward said abutments to engage the rear edge of the heel, and side gages connected to the rear gage and movable` A heel holder comprising fixed, spaced abutments arranged to be engaged by a curved heel breast at separated points, 'a rear gage slidable toward said abutments, and side gages pivotally movable about fixed centers into engagement with a heel held between the breast engaging abutments and the rear gage.

3. A heel holder comprising fixed, spaced, heel-breast engaging abutments, a rear gage slidable `toward said abntments, and side pivotally movable about fired centers int engagement with a heel held between the breast engaging abutments and the rear gage, said side gages being connected to, and moved by,the rear gage. 1

ci heel helder comprising fixed, spaced, heel-breast engaging abutments, a rear gage movable forwardly toward said abutments, and inwardly movable side gages operatively connected to the rear gage to be moved thereby through less distances than that through which the rear gageV moves.

ln a heel nailing machine, theeombination of a nailing die having a group of nail guiding conduits arranged in a fixed nailing pattern, and a holder for heels of different sizes' but all having said nailing pattern, said holder having means in fixed relation to the nailing die for engaging a curved heel breast at two separated points spaced from the sides of the heel, and movable means for engaging the side and rear enges of heels of diiferent widths and lengths and pressing said heels against said breast engaging means. v I

6. A. heel holder comprising a fixed breast gage, a movable rear gage which is springpressed toward the breast gage, and movable side gages connected tothe rear gage to be moved yinwardly when 'the rear gage moves forwardly and outwardly when the rear gage is moved rearwardly pressing a heel against it.

r. lin enpan sible heel nolder having gages forthe breast. sides and rear edges of a heelV yielding means fornormally contracting the helder, and connections between certain of said gages whereby outward movement of one gage will'positively expand the holder in a plurality of directions. c

8. .an expansible heel holder having gages the breast, sides and -rear edges of a heel, l, di means for normally contracting the horde and connections between certain of said gages whereby outward movement of one gage will positively expand the holder unequally in a plurality of directions.

ln testimony whereof I have signed my name to this specification.

ELMER n. Porn. 

